Horizontal pulp-strainer.



'PATENTED MAR. 1904.

No. 754,161. P. REINIOKB.

HORIZONTAL PULP STRAINER.

APP ATION IL I 110 MODEL.

NIH! INN NIH,

HM! HIHHHHH WIT-5555 v INVELNTQR UNITED STATES Patented March 8, 1904.

PAUL REINICKE, OF KQTHEN, GERMANY.

HORIZONTAL PULP-,STRAINER.

SPECIFICATION forming part of Letters Patent No. 754,161, dated March 8, 1904. Application filed February 4, 1903. Serial No. 141,913. (1T0 model.)

T0 at whom it may concern.-

Be it known that I, PAUL REINIGKE, manufacturer, a subject of the Duke of Anhalt, residing at Kothen, in the Duchy of Anhalt, in the German Empire, have invented a new and Improved Horizontal Pulp-Strainer, of which the following is a specification.

This invention relates to a horizontal pulpstrainer in which the accumulation and aggregation of fibers is prevented in the strainerbox itself. The strainer-box contains oscillating beating-wings, which are arranged upon axles located in said box. Said wings serve for forcing the pulp through the perforated plate located in the upper part of the strainerbox. I attain the object in question by arranging the said oscillating beatin -wings parallel to each other and actuating them in such a manner that the ascending half of the one system of' the wings drives the pulp into the space where the neighboring half of the neighboring system of wings descends. In the same manner as these wings of the two systems of wings act contrary to one another also the wings of one and the same system act contrary to one anotherthat is to say, the one half of the wings moves upward when the other half moves downward and the one half consequently drives the pulp against and through the perforated plate, whereas the other half tends to move the pulp away from said plate. In order to prevent the pulp against moving from the one half of the wings to the other (of one and the same system of wings) there are arranged besides the beatingwings in question also special beating-pieces extending vertically upward and downward just between the two rows or series of wings of one and the same system. Said beatingpieces are rigidly connected with the beatingwings and oscillate consequently together with the same; but the currents of pulp produced by them are directed not chiefly rectangularly to the perforated plate, but chiefly parallel to the same. The beating-pieces belonging to one pair of beating-wings consist of several parts having interstices between them. There are interstices also between the several pairs of beating-wings arranged on one and the same shaft. Each of the wings is wedgeshaped, the oblique surface being on the lower side@'. 6., on that side with which the wing acts upon the pulp. By using separate wings or pairs of wings instead of a continuous wing or wings, as hitherto, the manufacture and mounting of the system of wings is considerably facilitated, and by providing interstices between the separate wings the pulp is allowed to pass more freely through between the wings, as well as through the perforated plate, from which it gets to the paper-machine. Finally by making the lower surfaces of the wings oblique the fibers of or within the pulp are prevented from adhering to said surfacesi. e. to the wingsand the thorough mixing of the pulp is promoted, so that no accumulation and aggregation of fibers can take place.

In order to make my invention more clear, I refer to the accompanying drawings, in which similar letters denote similar parts throughout the several views, and in which Figure l is a plan of a horizontal pulpstrainer constructed according to my invention, the central portion of the perforated plate being broken away. Fig. 2 is a side view of said strainer, the central portion of the box being broken away. Fig. 3 is an end view of the said strainer, a part of the same being in vertical section; and Fig. 4 is a perspective view of one pair of beating-wings, the figure being drawn on an enlarged scale.

The pulp, which comes'from the sand-collector, passes in the direction of the arrows through the gutter 6, Figs. 1 and 3, and through the large apertures 0, Fig. 1, as well as through the angular pipes r, Fig. 3, into the box is,

Fig. 2, filling the same and rising over the.

wings f and over the perforated plate s, from which it passes away to the paper-machine at (0, Figs. 1 and 2. While rising from the bottom of the box A; to the perforated plate 8 the pulp passes through the interstices y between the various wings f. These wings are secured to the shafts w m, which are rocked by means hereinafter described. Each pair of beating-wings has upper beating-pieces 0, Figs. 2 to 4, and lower beating-pieces o. The lower surfaces g and m, Fig. 4, of the wings f are oblique or sloping; but this refers not only to the lower surfaces proper, but also to the sides a and a, Fig. 4:. The two wings f of each pair of beating-wings and the beating pieces 0 and 0, belonging to that pair, are connected with each other by a piece of tube 2., Fig. 4. The upper surfaces of the two wings f are in one plane with the uppermost portion of said piece of tube, and the oblique surfaces 9 and i and m and 71. extend from the free edges of the wings to about the lowermost portion of the said piece of tube, as distinctly represented in Fig. 4.

It is a matter of course that the just-mentioned parts might be fixed to the shaft m without the aid of a piece of tube like zfthat is to say, the parts f, c, and '0 might be inserted, for instance, into suitable grooves or recesses provided in the shafts m. At any rate, 110wever, the mode of securing the parts in question to the shafts it ought to be such that there are oblique surfaces, such as n g 2' and n m 2', which allow an easy passing along of the pulp without fibers of the same accumulating or aggregating in corners or the like.

The shafts w are connected with the drivingshaft w by a crank-disk z, a connecting-rod 1), a connecting-rod a, and lever-arms h, the latter being keyed to the projecting ends of the shafts w and being connected with each other by the rod 10, which in its turn is connected with the crank-disk a by the rod 19.

The manner of operation of the apparatus is as follows: The pulp when rising within the box k is energetically acted upon by the beating-wings f and the beating-pieces 0 and 2), so that any accumulations or aggregations of fibers that may perhaps have formed in the gutter e or in the angular pipes r are again subdivided into separate fibers. There is thus obtained by this means a pulp of perfectly uniform condition, and this pulp passes through the perforated plate 8 and leaves the machine through the longitudinal outlet (0, from which it gets to the paper-machine. The interstices y between the beating wings f permit of a sufiicient quantity of pulp passing from below to above, so that the papermachine is continually fed. The passing of the pulp from below to above is produced by the wings f, which tend to force the pulp upward not only on their upstroke but during their downstrokes too. At every downward movement of one row of wings the pulp just below those wings is forced upward through the interstices y, and as the speed is comparatively high and as, further, the lower surfaces of the wings are sloping, as described, there occurs another intimate intermixing of the various portions of the pulp, so that also by this means an absolutely uniform pulp is obtained. Impuritiessuch as sand, small pieces of wood, and the likecollect in a sort of funnel provided in the central portion of the bottom of the strainer-box 7v. Said funnel is furnished with a cock 6, through which the impurities may be removed from time to time without interrupting the continuous working of the strainer.

Having now described my invention, what I desire to secure by Letters Patent of the United States is 1. In a horizontal pulp-strainer having below the screen a plurality of oscillatory wings located side by side and adapted to act upon the pulp, the combination with the vat, the screen, and the wings,of means for leading the pulp into the spaces below the wings and away from the space above the screen; said spaces beingin direct intercommunication, and each of them containing a plurality of wings arranged coaxially, substantially as described.

2. In a horizontal pulp-strainer having below the screen a plurality of oscillatory wings located side by side and adapted to act upon the pulp, the combination with the vat, the screen, and the wings, of means for leading the pulp into the spaces below the wings and away from the space above the screen so as to cause said wings to force the pulp through said screen in an upward direction; said spaces being in direct intercommunication so as to form parts of a common chamber inclosed by said vat, and each part of said chamber containing a plurality of wings arranged coaxially, substantially as described.

3. In a horizontal pulp-strainer having below the screen a plurality of oscillatory pairs of wings located side by side and adapted to act upon the pulp, the combination with the vat, the screen, and the wings, of means for leading the pulp into the spaces below the wings and away from the space above the screen; said spaces being in direct intercommunication, and each of them containing a plurality of wings arranged coaxially, an interstice being left between every two of the thusarranged wings, substantially as described.

4. In a horizontal pulp-strainer having be low the screen a plurality of oscillatory pairs of wings located side by side and adapted to act upon the pulp, the combination with the vat, the screen, and the wings, of means for leading the pulp into the spaces below the wings and away from the space above the screen; said spaces being in direct intercommunication, and each of them containing a plurality of wings, arranged coaxially, projections attached to the upper side of said pairs of wings between the two wings forming a pair, substantially as described.

5. In a horizontal pulp-strainer having below the screen a plurality of oscillatory pairs of wings located side by side and adapted to act upon the pulp, the combination with the vat, the screen, and the wings, of means for leading the pulp into the spaces below the wings and away from the space above the screen; said spaces being in direct intercommunication, and each of them containing a plurality of wings, arranged coaxially, projections attached to the upper side of said pairs of ICC wings between the two wings forming a pair, and terminating only just at the lower surface of the screen, substantially as described.

6. In a horizontal pulp-strainer having below the screen a plurality of oscillatory pairs of wings located side by side and adapted to act upon the pulp, and having uprightflat parts located between the middle portions of said pairs of wings and said screen, the combination with the vat, the screen, and the wings, of means for leading the pulp into the spaces below the wings and away from the space above the screen; said spaces being in direct intercommunication, and each of them containing a plurality of wings arranged coaxially, said upright flat parts being fixed to said pairs of wings and being divided accordingly, substantially as described.

7. In a horizontal pulp-strainer having below the screen a plurality of oscillatory pairs of wings located side by side and adapted to act upon the pulp, and having flat upright bodies arranged between the middle portions of said pairs of wings and said screen, the combination with the vat, the screen and the wings, of means for leading the pulp into the spaces below the wings and away from the space above the screen; said spaces being in direct intercommunication, and each of them containing a plurality of wings arranged coaXially, said flat upright bodies being secured to said pairs of wings and being each shorter than the respective pair, substantially as described.

In witness whereof I have hereunto set my hand in presence of two Witnesses.

PAUL REINICKE.

Witnesses RUDOLPH FRIOKE, CARL ZIEGER. 

